glcontext_wgl: add missing return
glcontext_wgl: add missing return

Regression since 6c6d74f860638a9fcc5c8117022d7743a4ae6170.

gopro/gopro-lib-node.gl,gopro/gopro-lib-node.gl,gopro/gopro-lib-node.gl,gopro/gopro-lib-node.gl